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【单选题】
区别二氧化碳、氧气、空气三种气体，应采用的方法是 [     ]
A.
将气体通入水中
B.
分别观察颜色
C.
将气体分别通入澄清石灰水
D.
将燃烧的木条分别伸入集气瓶中
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【单选题】曲轴与凸轴的传动比是
A.
1:1
B.
1:2
C.
2:1
D.
1:3
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【单选题】曲轴与凸轴的传动比是( )。
A.
1 ∶1
B.
1∶2
C.
2∶1
D.
置于仓库放置
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【单选题】曲轴与凸轴的传动比是( )
A.
1:1
B.
2:1
C.
1:2
D.
1:4
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【判断题】I was confronted with the question in the late December 2003.
A.
正确
B.
错误
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【单选题】He is confronted with the moral dilemma of whether to steal a drug he can't afford so that he can save his wife's life.
A.
met
B.
baffled
C.
faced
D.
squeezed
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【单选题】Confronted with the complex international situation, we need a foreign policy that is more ____.
A.
symbolic
B.
confidential
C.
controversial
D.
flexible
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【单选题】As soon as he was confronted with the evidence, he confessed his guilt.
A.
showed
B.
admitted
C.
told
D.
claimed
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【单选题】曲轴与凸轴的传动比是( )
A.
1:2
B.
2:1
C.
4:1
D.
1:4
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【单选题】曲轴与凸轴的传动比是
A.
2：1
B.
1：1
C.
1：2
D.
以上都不对
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【单选题】Confronted with the new groups of cosmic reality, many educated men ______.
A.
become ignorant savages again
B.
find the 'time barrier' unbearable
C.
will not combine solar and stellar space
D.
cannot adapt to the abrupt change of scale
查看完整题目与答案
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【单选题】曲轴与凸轴的传动比是
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1:1
B.
1:2
C.
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【单选题】曲轴与凸轴的传动比是( )。
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【单选题】曲轴与凸轴的传动比是( )
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【单选题】He is confronted with the moral dilemma of whether to steal a drug he can't afford so that he can save his wife's life.
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【单选题】Confronted with the complex international situation, we need a foreign policy that is more ____.
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【单选题】As soon as he was confronted with the evidence, he confessed his guilt.
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C.
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【单选题】曲轴与凸轴的传动比是( )
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【单选题】曲轴与凸轴的传动比是
A.
2：1
B.
1：1
C.
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D.
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【单选题】Confronted with the new groups of cosmic reality, many educated men ______.
A.
become ignorant savages again
B.
find the 'time barrier' unbearable
C.
will not combine solar and stellar space
D.
cannot adapt to the abrupt change of scale
查看完整题目与答案